
Early inhaler for ether anaesthesia
1847-1848
1847-1848
circa 1832
1820
1823
1838
1821
circa 1846
1801-1840 (original); 1901 (model)
1829
1842
1837
1833
1849
1842
1835
1834
1829
1834
1834
1845
1845
1838
1826
1842
1836
1834-1844
1837
1820
1837
1822-1840
circa 1840
1839
1843
1849
1846
1842
1848
1837
1835
1837
1847
1825
1832
1831
1831
1846
1844
1934
1837
1844